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Finding the Fourth Proportional to 153,752.86, 212,069.91 and 99,938.62

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Solution

The fourth proportional to 153,752.86, 212,069.91 and 99,938.62 is: 137,844.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,752.86 : 212,069.91 = 99,938.62 : x
  2. Step 2: Convert to fraction form
    153,752.86/212,069.91 = 99,938.62/x
  3. Step 3: Cross multiply
    153,752.86x = 212,069.91 × 99,938.62
  4. Step 4: Simplify right side
    153,752.86x = 21,193,974,148.92
  5. Step 5: Solve for x
    x = 21,193,974,148.92/153,752.86
  6. Step 6: Final answer
    x = 137,844.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.